Backup Memory Ram Pack Replacement Procedure - Minolta CF910 Service Manual

4-2.

BACKUP MEMORY RAM PACK REPLACEMENT PROCEDURE

Work Before Replacement
1. Select the List Output mode under the Service Mode and print the following lists: Image
Processing, Setting/Adjust, and Counter.
Note
Check the settings of the following functions and make a note of them before the replace-
ment as no lists will be printed for them.
Setting Mode menu: Paper Kind, Admin. Mode, RD Mode, Org. Detect Sensor, CH Clean-
ing, Editor Screen, A6 Card Margin (Metric Areas) or 4x6 Paper Margin (Inch Areas).
In addition, the settings in the User Mode are not printed, either. Check and make a note of
the settings as necessary.
Work After Replacement
1. Clean the optical parts (PH Assy, Original Glass, Lens, Mirror, Lamp).
2. Add fuser oil up to the required level.
3. Replace the Toner Collecting Box with an empty one or dump toner from the Toner Col-
lecting Box.
4. Remove the Rear Cover to prevent predrive from being initiated.
Note
Since the new Backup Memory RAM has no old developer data, the copier may detect a
malfunction as it relates to the Developing Unit if predrive is initiated.
5. Using Touch Panel Correct, correct the position of the keys on the Touch Panel.
6. Select "Toner Collect" of "Life Counter 3 (Others)" of Counter available from the Service
Mode and press the Clear key on the control panel.
7. The default language of the display for the Touch Panel is English. Change this setting
as necessary by using "Language" of User's Choice which is available by pressing the
User Mode key on the control panel.
8. Select "Marketing Area" of Setting available from Service Mode and select the same
marketing area as before the replacement.
9. Carry out the following tasks in the Developer Change Mode in the order given below.
Task
Developer
Developer Discharge
Developer Filling
AIDC
AIDC Sensor
AIDC Offset
ATDC Sensor
: Adjustment ∆: Check
10. Select "BK Toner Sup. Status" of State Confirm available from Service Mode. Then,
check that the "Machine Constant" value falls within the range from -1.0 to 1.0. (If the
value falls outside the range, it may adversely affect the image on the copy.)
Procedure
Check that the value falls within 4.0 ± 0.3 V
as a result of an automatic adjustment per-
formed.
Automatic adjustment
C,M,Y Check that the value falls within 6.0
± 0.2% as a result of an automatic
adjustment performed.
K Automatic adjustment
D-147
Function Order
1
2
∆
3
4
∆
5
6